There are a number of other post in this forum section in this regard.
Luckily, I found a solution in one of these topics.
The command:
sudo /usr/bin/gdk-pixbuf-query-loaders --update-cache
make the icons work properly again.
[solved]
]]>What is in your "~/.gtkrc-2.0" file?
gtk-theme-name="Mint-X"
gtk-icon-theme-name="Mint-X"
gtk-font-name="Sans 10"
Any ideas to solve the issue?
Alternatively, which package can I downgrade in order to restore the correct functioning of mint-x-icons?
(gtk2, gtk3, other?)